Double nat on xbox x

[Poppy23]

My xbox x is connected to my mobile broadband and my network is on no strict nat when I go in to my router settings and turn on upnp on it is strict nat when I take It off  its upnp not successful I can't multiplay without nat open and upnp what I have heard I tried to play but it kicks me out of sessions all the time does anyone know the settings k need or what I can do thankyou

[Charlotte]

Hello, @Poppy23. I hope you're well. I'm sorry to hear that you're having trouble using your Xbox on mobile broadband, as I appreciate the importance of being able to use the service. Please reach out to the Technical Team by either calling up on 03333 040 191, or via Live Chat, so that we can take a deeper look into this for you.